,
Mayrink, Jussara
Souza, Renato T.
Feitosa, Francisco E.
Rocha Filho, Edilberto A.
Leite, Débora F.
Vettorazzi, Janete
Calderon, Iracema M.
Costa, Maria L.
Kenny, Louise
Baker, Philip
Cecatti, Jose G. http://orcid.org/0000-0003-1285-8445
Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1107597)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (401636/2013-5)
Article History
Received: 2 July 2019
Accepted: 5 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: This is a study derived from the Preterm SAMBA study which obtained ethical approval from the National Committee for Ethics in Research of Brazil (CONEP) and the Committee of Research Ethics (CRE) of the coordinating center, the University of Campinas (Letter of approval 1.048.565 issued on 28th April 2015), and all other Brazilian participating centers: CRE from the Maternidade Escola Assis Chateaubriand of the Federal University of Ceara in Fortaleza, CRE from the Center for Health Sciences of the Federal University of Pernambuco in Recife, CRE from the Clinics Hospital of the Federal University of Rio Grande do Sul in Porto Alegre, and the CRE from the Clinics Hospital of Botucatu Medical School at the University of the State of Sao Paulo (Unesp). Each woman signed an informed consent form before enrolment in the study. The approval for the study included administrative permissions for the research team to access the data used for this analysis.
: Not applicable.
: Maria L Costa, one of the co-authors is Associate Editor of the BMC Pregnancy and Childbirth. The other authors declare that they have no competing interests.